Investigating interfacial stresses and bending behavior in beams strengthened with bonded prestressed FRP plates

Abdelghani Brahimi, Boucif Guenaneche, Okkacha Youb, Sidi Mohamed Bennaceur and Khaled Amara

Abstract

In the present work, we present an explicit analytical solution for calculating the flexural and interfacial behavior of beams strengthened by prestressed bonded plates. Unlike existing approaches, our method comprehensively integrates shear-lag deformations from both the beam and the plate, thus providing a more accurate prediction of critical interfacial stresses and overall composite behavior. A parametric analysis was conducted to examine how variations in parameters such as prestress force and the geometric and mechanical characteristics of the reinforcement plate impact the behavior of the interface. These variations were found to significantly influence the maximum shear and normal stress within the composite element.

Key Words

bending; interfacial stresses; plate prestressed; shear deformation; strengthening

Address

Abdelghani Brahimi: Department of Civil Engineering, Faculty of Science and Technology, University of Naama, 45000, Algeria; Artificial Intelligence Laboratory for Mechanical and Civil Structures, and Soil, University of Naama, 45000, Algeria Boucif Guenaneche: Department of Civil Engineering, Faculty of Science and Technology, University of Ain Temouchent, 46000, Algeria Okkacha Youb: Scientific and Technical Research Centre on Arid Regions (CRSTRA), Omar el Bernaoui, BP 1682 ,07000 Biskra, Algeria Sidi Mohamed Bennaceur: Department of Civil Engineering, Faculty of Science and Technology, University of Naama, 45000, Algeria; Artificial Intelligence Laboratory for Mechanical and Civil Structures, and Soil, University of Naama, 45000, Algeria Khaled Amara: Department of Civil Engineering, Faculty of Science and Technology, University of Ain Temouchent, 46000, Algeria; Engineering and Sustainable Development Laboratory, Ain Temouchent, 46000, Algeria

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